For slopes below 20 degrees systems such as epdm fibreglass metal roofing can be used.
Best slope for shed roof.
Think of a shed roof as a flat roof at a steeper slope.
The key difference between a skillion roof style and a shed roof style is the slope a skillion roof is usually greater than 6 12.
The span is limited by the strength of the rafter.
You can also think of it as one half of a traditional gable roof.
Tiles or shingles may be used for roofs with these slopes with caution.
We have a low slope shed roof that was repaired with roll roofing as an emergency patch in 2014.
Whereas a hip roof and other popular roof types have at least two sides the shed roof has a single slope that can vary in steepness depending on the design.
This slope works well for sheds that are fairly narrow like 4 to 6 feet but for sheds that are 8 or wider the shed roof becomes unsightly high.
Basically the steeper the pitch the better it can shed snow and rain.
For lots more information on which roof finish to use for which slope and indicative costs.
A quarter inch slope is the lowest you would go with a metal roof experts recommend at least a half inch minimum to ensure a weatherproof interior for your shed.
This means that for every 12 inches of horizontal distance across the shed the roof will rise 4 inches.
The roof is typically sloped down from the connecting wall if the shed is attached to the side of your house or garage.
Rubber waterproofing isn t needed due to the slope.
X research source a slope of 6 12 for example means that for every 12 inches 30 cm of length the angle of your roof rises 6 inches 15 cm.
Make the roof slope at least six degrees to ensure some positive drainage.
We had ice damage which forced the roof repair but because it was in the winter only the lower half of the 23 12 area was repaired.
Ribbed steel sheet or shingle.
Pitch 10 to 20 degrees.
Visit the shed roofing page.
Also if the roof is insulated include a ventilated air gap between the insulation and roof deck to prevent condensation.
Beyond that you re free to choose whatever slope best fits your plans for your shed.
Remember metal roofing is more expensive than shingles.
However if you choose to build a freestanding shed and use this style of roof you should plan the slope of your roof in such a manner as to slope down from the front to the back of the shed.
Felt shingle systems can achieve lower slopes down to about 20 degrees.